Digital Logic Design – Digital Electronics MCQs Set-3 Contain the randomly compiled Digital Electronics MCQs from various reference books and Questions papers for those who is preparing for the various Competitive Exams,Interviews and University Level Exams.

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1. Which one of the following is the type of complement for each base R system?

  • Diminished radix-complement representation [(R – 1)’s complement]
  • Radix- complement representation [R’s complement]
  • 1’s and 2’s complement representation
  • Both A and B

2. For subtraction of binary number, subtract the _________________.

  • Minuend from the subtrahend digit
  • Subtrahend digit from the minuend
  • MSB from the LSB
  • None of the above

3. Which of the following condition is true for determining overflow condition in 2’s complement?

  • When adding two positive numbers gives a negative result or when two negatives give a positive result.
  • If sign bit (MSB) of result and sign bit of two operands are of different signs.
  • The ‘1’ in the MSB position indicates a negative number after adding two positive numbers.
  • All of the above

4. What does the leftmost bit represents, according to the IEEE standards?

  • Sign of the number
  • Position of the number
  • Weight of the number
  • None of the above

5. Floating-point numbers are those numbers, which include ______________

  • Decimals
  • Fractional parts
  • Integer values
  • All of the above

6. The binary representation of 0.875 is 0 01111110 11000000000000000000000 in _______________ presentation

  • 128- bit
  • Excess 127
  • 32- bit
  • 16-bit

7. 1000001 represents as (65)10 in which code?

  • ASCII code
  • Straight binary code
  • Gray code
  • BCD code

8. Binary Coded Decimal or BCD is also known as ______________

  • 2841
  • 4821
  • 4281
  • 8421

9. In straight binary code, N-bits or N binary digits can represent ______________ different values.

  • 2^N
  • 2^N+1
  • 2^N-1
  • 2^N-1

10. What is the decimal representation of decimal number 5?

  •  0000
  •  1001
  •  0011
  •  0101
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